Tag: biotechnology

Questions Related to biotechnology

Aim of plant breeding is to produce

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Disease-free varieties

  2. High yielding varieties

  3. Early maturing varieties

  4. All of the above

Show answer
Correct Option: D
Explanation:

The prime aim of plant breeding is to improve the characteristics of plants that they become more useful automatically and economically. Some of the objectives may be summarized as follows-
1. Higher yield: Higher yield of grain, fodder, fibre, sugar, oil etc.
2. Improved quality: The quality characters may vary from one crop to another, such as grain size, shape, colour, milling and backing quality of wheat, cooks quality in rice, malting in barley. Size shape and flavour in fruits and keeping quality of vegetables, protein contents in legumes, methionine and tryptophan contents in pulses etc.
3. Disease and pest resistance: Resistant varieties offer the cheapest and most convenient method of disease and pest control. They not only helps to increase the production but also stabilize the productivity.
4. Maturity duration: It permits new crop rotation and extends crop area. Thus breeding for early maturing varieties suitable for different dates of planting. This enables the farmer to take two-three crops in a year.
5. Agronomic characters: Three includes the characters, such as dwarf, profuse tillering, branching erect resistance and fertilizer responsiveness. Thus, option D is correct.

The process of removing stamens from the flower bud during hybridization is called as

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Crossing

  2. Selfing

  3. Emasculation

  4. Caping

Show answer
Correct Option: C
Explanation:

Emasculation involves the removal of stamens from bisexual flowers of the female parents in order to avoid self-pollination in these flowers. It is done before the anthers are mature. If in a condition the female parent bears bisexual flowers, then elimination of anthers from the flower bud before the anther matures. This step is known as emasculation.  

Caping is the covering of flower for preventing cross pollination. Crossing refers to hybridization. Selfing occurs in bisexual flowers. 
Thus, the correct answer is option C.

Sugarcane breeding research institute (SBRI) is situated at

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Lucknow

  2. Coimbatore

  3. New Delhi

  4. Shimla

Show answer
Correct Option: B
Explanation:

'Sugarcane Breeding Institute' is the sugarcane research and development institute located in Coimbatore, India. On the 1st day of April 1932, a sub-station of the 'Sugarcane Breeding Institute', Coimbatore (Tamil Nadu) was established at Karnal (Haryana) with funds provided by the then 'Imperial Council of Agricultural Research' (now the Indian Council of Agricultural Research abbreviated as ICAR). 

Thus, the correct answer is option B.

Mysore has one of the following institute

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. National agricultural research institute

  2. Rice research institute

  3. Forest research institute

  4. Central food technology research institute

Show answer
Correct Option: D
Explanation:

Central Food Technological Research Institute, is one of the laboratories of the Council of Scientific and Industrial Research located in Mysore, Karnataka. 

So the correct option is D.

Hexaploid or moderm wheat developed through ______________.

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Hybridomas

  2. Chromosome doubling

  3. Hybridisation

  4. Hybridisation and chromosome doubling

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Correct Option: D

Majority of improved Indian Rice varieties have arisen from a cross between

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Oryza sativa indica $\times$ Oryza nivara

  2. Oryza sativa indica $\times$ O. sativa japonica

  3. O. sativa japonica $\times$ O. nivara

  4. O. rufipogon $\times$ O. nivara.

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Correct Option: B

Aim of plant breeding is to

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Control pollution

  2. Keep soil fertile

  3. Produce improved varieties

  4. To maintain wild plants

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Correct Option: C

Four inbred/pure lines of Maize are crossed. The cross is

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Double cross

  2. Dihybrid cross

  3. Tetrahybrid cross

  4. Tetraploid cross

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Correct Option: C

A cybrid is hybrid carrying

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Genomes and cytoplams of two different plants

  2. Cytoplasms of two different plants

  3. Cytoplasms of two different plants but genome of one plant

  4. Genomes of two different plants

  5. Cytoplasms of several plants but genomes of two plants.

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Correct Option: C

Branch of biology dealing with improvement of plant variety

botany plant breeding method of plant breeding for crop improvement plant breeding for food production biotechnology

  1. Eugenics

  2. Plant breeding

  3. Agrology

  4. Serendipity

Show answer
Correct Option: B